arm64: dts: mediatek: mt6795: Add topckgen, infra, peri clocks/resets

Add nodes for topckgen, infracfg and pericfg, providing various
clocks and resets and needed to support basic IPs of this SoC.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20221027095504.37432-2-angelogioacchino.delregno@collabora.com


Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>